機器
auxiliary
background
backup
bolt
broken
chrome
construction
deliver
deposition
duplicate
emergency
engineering
equip
equipment
extension
finish
heat
heater
heater repair
heating element
industrial
industry
iron
isolated
macro
metal nut
metallic
object
postal index
provide
reserve
reserved
scale
screw
serve
shiny
silver
spare
stainless
steel
stiffness
supply
ten
tool
trash
washing
waste
white
work